1. Kentucky Blue grass - great color and resilient to damage.
2. Fine Fescue - takes less maintenance, has some shade tolerance and many types are cultivated with bug resistant endophytes.
3. Perennial Ryegrass - can take a beating and is quick to establish.
4. Tall Fescue - head, shade and drought resistant and withstands high traffic.
5. Red Fescue - stable through droughts and tolerant to shade.

Grass fed beef

Grassfed beef is also called pasture-raised beef, pasture-grown or grass-finished beef. It is an artisanal slow food, crafted from cattle raised and finished on intensively managed high-quality pasture and hay, without grain of any kind.
100% grass-fed and grass-finished providing you with the health benefits
Grass fed steaks have a different texture and taste.

Corn fed beef

They, at no time, receive steroids, hormones or antibiotics as a part of their weight gain regiment. The animal typically weighs 1100-1400# when it is ready to be butchered.

This depends on the breed and whether they are a steer or a heifer.
antibiotics used in corn-fed animals to prevent or treat disease. Again, residues in meat are not likely to hurt people, but use of antibiotics leads to resistant strains of bacteria in animals and in the environment
all beef—fatty or lean, grass-fed or corn-fed—contains the same amount of cholesterol.

Corn changes their normal digestion process, trapping gas inside and causing the rumen to press on the lungs.

The cow suffocates unless a tube is pushed down its esophagus to relieve the pressure.
corn-fed beef is far less nutritious than grass-fed, which has higher levels of omega-3 fatty acids, vitamins A,C, D, and E, and is lower in saturated fat.

Grain fed beef

While grain helps fatten the animals up very quickly, it seems that it is really, really bad for cattle and can cause painful conditions such as feedlot bloat as the result of a diet containing too much starch and too little fiber. Left untreated, feedlot bloat can suffocate cattle.
Acidosis is another side effect, which can also be a painful or life threatening condition.

According to Michael Pollan, author of books including "The Omnivore's Dilemma" and "Food Rules", acidosis can lead to bloat, diarrhea, ulcers, liver disease and a general weakening of the immune system, meaning the animals are susceptible to bacterial infections and all sorts of other illnesses.

Grain fed beef often need to be treated more heavily with supplements and antibiotics to make up for what they are missing from the diet that was intended for them.
The vast majority of beef cattle eat grain or other high-calorie feed for several months at a feedlot before being processed.

Junk fed beef

The high price of corn has also made it hard on conventional — if that's the right word — beef ranchers, who have for decades converted cheap corn into profits by feeding it to cows on crowded feed lots.

It's already been reported that some ranchers have turned to the waste from ethanol plants to feed their cows, and that the switch makes the cows produce even more E. coli bacteria — the kind that's harmless to cows, but which can and frequently has contaminated the meat supply for humans. Dozens have been made ill from eating beef produced at plants "processing" — that is, assembly line-style slaughtering — these cows.
What's also true is that E. coli only showed up so prolifically in the guts of cows since they've been fed corn in the last 50 years or so. A starchy food the grass-eaters didn't evolve to consume, corn produces an acidic mess in their stomachs that E. coli bacteria apparently loves. But corn has been made cheap by federal policy, and it can be used — often along with artificial hormones — to make cows grow faster and fatter.

As Georgian grass-fed beef rancher Will Harris put it, "The best way to sell seven pounds of corn was to sell one pound of beef." (Of course, as Harris knows, all that rapid growth on an unnatural diet in such close proximity to other cows makes it necessary to treat them with antibiotics to prevent other disease outbreaks, which like E. coli would be rare if the animals weren't raised this way.)

Without cheap corn, the economic model for beef ranchers is broken. And there's only so much waste from ethanol plants to go around. Fortunately for these ranchers, there's waste from other sources — namely, any nearby food processing plant. As a Wall Street Journal video recently demonstrated (thanks to Tom Philpott at Grist for bringing it to my attention), some ranchers are feeding their cows potato chips and chocolate. Actually, that's too generous: the cows are eating waste — the potato chip and chocolate waste not fit for the junk food aisle at the grocery store.